Jambs pocknell



(N0 Model.)

J. POGKNELL.

AUTOMATIC GUT-OFF FOR WATER TANKS.

188875.948. Patented Jan. 8, 1888.

"iliiiinmfi l WI ESSES: INVENTOR:

v v ATTORN YS.

UNITED STATES PATENT OFFICE.

JAMES POOKNELL, OF JERSEY CITY, NEYV JERSEY.

AUTOMATIC CUT-OFF FOR WATER-TANKS.

SPECIFICATION forming part of Letters Patent No. 375,948, dated January3, 1888,

Application filed May 16, 1587. Serial No. 238,395.

To all whom it may concern.-

Be it known that I, JAMES POCKNELL, of Jersey City, in the county ofHudson and State of New Jersey, have invented a new and ImprovedAutomatic Cut-Off for Water-Tanks, of which the following is a full,clear, andexact description.

The object of my invention is to stop a pump which is discharging into atank when the latter is full.

The invention consists ofa bucket supported on one end of a bell-cranklever, and in which discharges the overflow-pipe of the tank, of aweighted bell-crank lever connected with said first bell-crank lever andprovided with a catch, and of a weight hung on the said catch andadapted to actuate a lever connected with the valve of the steam-supplyfor the pump or with ashifting-lever connected with the driving-belt ofthe pump.

The invention also consists of certain parts and details andcombinations of the same, as will be fully described hereinafter, andthen pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in both figures.

Figure l is a perspective view of my improvement as applied to the valveof a steamsupply pipe, and Fig. 2 is a side elevation of a part of myimprovement as applied to a shiftinglever.

The steam-supply pipe A, connected in the usual manner with thesteam-pipe, is provided with the valve B, carrying the valve-wheel O foropening and closing said valve. The lever D is connected eitherpermanently or temporarily with the spokes of said wheel 0, and theouter end of said lever D is connected by a chain, E, with the weight F,supported by a chain, G, carrying on its upper end a hook, H, adapted tobe hung overacatch, 1, formed on the weighted lever Lfulcrumed on abracket, J, secured to awall or to the steam-supply pipe A, as shown inthe drawings. The weighted lever I is provided with theupwardly-extending arm I", connected by the rope or rod K with one armof the bell=crank lever L, pivoted in the tank N, and supporting on itsother arm the bucket 0, into which dis- (No model.)

charges the telltale pipe P, connected with the tank into which thewater is pumped by the pump connected with the steani'snpply pipe A. Thebucket O is held inside of the tank N, and is provided with a smallaperture in its bottom. Thewaste-pipe Q leads from the tank to anydesired place.

The operation is as follows: When sufficient water has accumulated inthe bucket 0 from the tell-tale pipe P to overcome the weighted lever I,then the bucket O swings downward, and thereby causes the lever I toswing in the direction of the arrow to, so that the hook H is disengagedfrom the catch 1 and the weight F falls down, exerting a pressure uponthe outer end of the lever D, which just turns the wheel 0, whereby thevalve B is closed and the steam in the pipe A is shut off from the pump,which thus ceases to rotate. The water discharged by the bucket 0 passesinto the tank N and out of the same to any convenient place through thewaste-pipe Q. Now, it will be seen that the engineer in charge of thesteampump is thus notified, as soon as the weight F drops and the valveB is closed, that the tank into which his pump discharges isfull. Thepump is again started by the engineer whenever it is necessary, and thelever D is placed in its former position and the hook His again hung onthe catch l of the weighted lever 1,

whereby said lever pulls the bell-crank lever' L and its bucket 0 intothe former position, ready to receive the water from the tell-tale pipeP. The hook J on the bracket J forces the hook H off of the catch 1,when the latter moves toward the rear, as above described.

Instead of connecting the chain E with the lever D, as before described,I may also connect said chain with a bell-crank lever, B, piv otallyconnected with the shifting-leverS, operating on the driving-belt, whichimparts motion to the steam-pump. The operation in this case is the sameas above described, the only difference being that the weight F,pullingon the bell-crank lever R, moves the lever S, so that the latter shiftsthe belt'from the tight pulley to the loose pulley, whereby the workingof the pump is stopped.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. In an automatic cut-off, the combination,with a bucket supported on a bell-crank lever, of a weighted bell-cranklever connected with said bucket lever, a catch formed on said Weightedlever, a hook adapted to be hung on said catch, a weight supported bysaid hook, and a lever connected with said weight and adapted to operateeither the stealninlet valve or the shifting-lever for the driving-belt,substantially as shown and described.

2. In an automatic cut-off, a bucket into which the tell-tale of awater-tank discharges, and a bell-crank lever supporting said bucket onone arm, in combination with a weighted bell crank lever connected withthe other arm of said bell-crank lever supporting the bucket, a brackethaving a hook on which said weighted bell-crank lever is pivoted, acatch formed on said weighted bell-crank lever and extending near saidhook of the bracket, a hook adapted to be hung on said catch, a weightsupported by said hook, and a lever connected with said weight andadapted to operate either the steaminlet valve or the shifting-lever forthe main driving belt of the pump, substantially as herein shown anddescribed.

JAMES POOKNELL.

, Witnesses:

FRANK F. RUGGLES, JOHN \VRIGHT.

